Friction driving mechanism for rolling-mills.



- PATENTED MAR. 17, 1903.

0. A. ERBSLU G MECHANISM IOATION FILED OQT FRICTION DR FORROLLING MILLS.

N0 MODELx UNITED STATES CARL ALEXANDER ERBSLGH, OF BARMEN, GERMANY.

FRICTION DRIVING MECHANISM FOR ROLLING-MILLS.

SPECIFICATION formingpart Of Letters Patent N 0. 722,685, dated March 17, 1903.

Application filed October 25, 1901. Serial No. 80,026. (No model.)

To all whom it may concern:

Be it known that I, CARL ALEXANDER ERBS- LOH, rolling-mill owner, a subject of the King of Prussia, German Emperor, residing at No. 2 Schonenstrasse, Barmn, in the Kingdom of Prussia, Empire of Germany, have invented certain new and useful Improvements in Friction Driving Mechanism for Rolling-Mills; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

My present invention relates to a driving mechanism for the upper roll of rolling-mills, in which motion is directly imparted to the upper roll by means of cog-wheels seated upon the gudgeons of the rolls without any intermediate parts.

In cases where the upper roll of heavy rolling-mills received its motion by means of cogwheels it was hitherto customary to arrange the latter at a considerable distance from the rolls themselves and transmit the power from the wheel for the upper roll to the latter with the aid of an interposed bar coupled to the wheel-shaft and to the roll after the manner of universal joints; but this driving mechanism for the upper roll demands very much space, the wheel for the upper roll must be provided with extra bearings, and the pliable connection of said intermediate bar with the cog-wheel, on the one hand, and with the upper roll, on the other hand, are very disad van tageously strained, and hence wear out very rapidly, so that frequent repairs and inaction of the mill are unavoidable, causing loss of time and money.

The object of the present invention is to avoid all these drawbacks and to provide a driving mechanism for the upper roll of heavy rolling-mills which enables me to save a great amount of valuable space and at the same time to simplify the construction of the mechanism and prolong its life, as the extra bearings for the wheel and the intermediate bar connectingit with the upper roll are not any more needed. The cog-wheels are now directly placed upon the ends of the gudgeons of the rolls, so that themotion of the under roll is transferred to the gudgeon of the upper roll without any other parts than said wheels. v

In the accompanying drawings, Figure 1 is in section; and Fig. 2 is a vertical section on line A B of Fig. 1.

The coupling a of the driving-shaft b is placed over the indented part c (of clover-leaf section) of the gudgeon d of the lower roll 6. Between the coupling a and the gudgeon at proper is securely keyed the recessed cogwheel f. Upon the reduced cylindrical part g of the gudgeon h of the upper roll t'is movably mounted the cog-wheel la, meshing with the cog-wheel f of the lower roll e. The Wheel is recessed on both sides, into which recesses the Wooden rings Z and m are partly sunk. (See Fig. 1.) After said wooden rings and the wheel is are put in place a heavy washer n is pressed against the outer wooden ring Z by screw 0, thus uniting the wheel is with the upper roll '6 and rotating the latter by means of the created friction, as the connection of the rolls by means of cog-wheels can under no conditions whatever be a rigid one, because the diameters of the rolls are never exactly equal, for which reason the upper roll would gain a lead over the under roll, or vice versa, thus surely leading to the destruction of the cog-Wheels if both were rigidly conneoted with the rolls. The pins p and q prevent the washer n from rotating.

The gudgeons d and h are journaled in the post a" of the mill-frame and may be accomplished in any known manner, which details are not shown here, as such and other parts of the machine are not forming a part of this invention.

I claim 1. A friction driving mechanism comprising a driving cog-wheel, an object to be driven der, a second cog-wheel loosely seated upon said cylindrical part of the object to be driven and meshing with the first-named cog-wheel, a divided friction-ring seated between the inner side of said second cogwheel and the shoulder formed on said cylindrical part, a washer larger in diameter than said cylindrical part and having pins entering the end of said cylindrical part to prevent the rotation of said a side view of the driving mechanism,partly 55 provided with a cylindrical part and a shoulwasher, a second divided friction-ring seated between the outer side of saidsecond cog-Wheel and said washer, and a tightening-screw to attain degrees of friction necessary between the second cog-wheel and the object to be driven to overcome various degrees of resistance.

2. In a friction driving mechanism of the kind described the combination of a driving cog-wheel, an object to be driven provided with a cylindrical part and a shoulder, a second cog-wheel meshing with the first-named cog-wheel and seated upon said cylindrical part of the object to be driven, a divided friction -ring seated between said second cogwheel and the shoulder formed on said cylindrical part, a Washerlarger in diameter than CARL ALEXANDER ERBSLOH.

\Vitnesses:

OTTO KONIG, T. A. RITTERSHAUS. 

